Polish miner KGHM begins production at massive copper mine in Chile

[caption id="attachment_801696" align="aligncenter" width="600"] Sierra Gorda — the world’s 4th largest copper project —  is located in the Antofagasta region within the Atacama Desert, Chile’s largest copper producing region. Image courtesy of KGHM.[/caption] Polish miner KGHM expects to start shipping copper...